| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 36 |
1.5%
|
| 2 | A few | 34 |
1.4%
|
| 3 | Many | 94 |
4%
|
| 4 | All | 419 |
17.8%
|
| 777 | 5 |
0.2%
|
|
| 999 | Missing | 1761 |
75%
|